Detachable closure for containers



March 3, 19360 H. JEZLER DETACHABLE CLOSURE FOR CONTAINERS Filed March 16, 1954 2 Sheets-Sheet 1 Marcia 3, 1936. JEZLER 2,032,879

I DETACHABLE CLOSURE FOR CONTAINERS Filed March 16, 1934 2 Sheets-Sheet 2 fig. 8

Patented Mar. 3, 1936 UNITED STATES PATENT OFFICE Hubert Jezler, Zurich, Switzerland, assignor to Kontroll A.,-G., Zurich, Switzerland, a corporation of Switzerland Application Marchlfi, 1934, Serial No. 715,842 In Switzerland May 18, 1933 7 Claims. (01. 215 -45) 7 The invention relates toa closure for containers provided with amouth, spout and so forth, the invention relating particularly to closures wherein the closure parts can be detached comv pletely from the container.

The object of the invention is to provide a closure of this type which can be closed and released easily and which, in spite of this, is pressed with a high pressure against the packing surface.

A further object resides therein that the closure part has such a shape that it bears snugly against the container walls and presents little obstruction to the application of tin caps or other packingmaterial.

According to the invention these objects are obtained in that in a holder, containing the packing disc, which is fitted over the open end of the container for instance of the bottle or the like, is provided an open resilient spreading ring located in inwardly open radial guides in the holder,.and that means are also provided for-pressing the open spreading ring against the walls of the bottle neck, and securing the ring in the locking position. As means for pressing the spreading ring there are used, according to the invention, wedge surfaces which act on the free ends of the spreading ring. The spreading ring may thus, for example, be pressed against inclined walls of the neck so that when pressing the spreading ring together radially there is obtained simultaneously an axially directed pressure of the packing medium against the mouth of the bottle or the like.

The invention may be carried into effect in various ways. In all the forms of construction however, the wedge action is obtained by a movable or rotary cap,sleeve, key or lever and thus the closure cover is pressed against the packing surface of the vessel.

v In the accompanying drawings are illustrated a few examples of construction. In these drawings:

Fig. 1 is a longitudinal section of a bottle neck with the closure, whilst the closure parts on the left handside are in the closed position and on 45 the right hand side directly before the parts enter into the locking position.

Fig. 2 is a side view of the closure cover with inserted spreading ring.

Fig. 3 shows a second form of construction 50 partly in side elevation, partly in section.

Fig. 4 is a section on the line IVIV of Fig. 3.

Figs. 5, 6 and '7 show in side elevation, in axial section and in section on the line VIIV'.II of Fig. 6 a further form of construction of the closure.

Fig. 8 shows in axial section a pot of glass, earthenware or the like with the new closure applied. thereto..

Figs. 9 and 10 show a closure cover in section and in side elevation. 5

Fig. 11 shows a sheet metal can with the new closure.

Figs. 12, 13, 14.and-15 each show in section closure capwith a spreading ring guide.

In the construction shown in Figs. 1 and 2 the 10 vessel is in the form of a bottle which has a neck I provided with a radially outwardly extending projection 2 adjacent to the rimforming the mouth of the bottle. On the top of the rim rests the closure cover 3, with the soft disc-shaped l5 packing 4. The cover 3 is provided with a cylindrical skirt surrounding the projection 2. Near the lower end the cover 3 is provided with downwardly bent lugs 9. These lugs together form a guide for a spreading ring 8. The guide is open radially inwards. I

The distance between the lugs 9 is so selected that thespreading rings receive an efficient guide on all sides. The ring 8.is open, it consists of springy material and tends to, move away from 25 the bottleneck] into the guide I. In order to press the spreading ring against the projection 2 of the bottle neck I there is provided a cap II which is fitted over the. closure cover 3. In the skirt of the cap H are provided ribs I3 which become higher towards the upper end of the cap II.. The ribs l3 bear against the spreadin ring 8 through the spaces 10. By axial movement of the cap the ribs [3 press the spreading ring 8 against an inclined wall of. the projection 2, whereby the packing 4 is pressed against the upper end face .of the bottle neck I. The lower end of the cap II is provided with an inwardlyprojecting flange "which when opening thejclosure (Fig. 1 right hand half bears against the lugs '9' and by,means of which the closure cover 3, 4 is removed from the bottle.

In the form of construction in Figs. 3 and 4, the spreading ring 8 is located in a closed grooveshaped guide, open towards the inside of the closure cover 3. The cover skirt has a radial slot I1 through which the free ends of the spreading ring 8 pass radially to the outside. These ends are bent in the form of hooks I4. These hooks project to the outside through an opening I5 in the cylindrical skirt of the cap H. The longitudinal edges of the opening [5 are inclined and act as a wedge. When moving the cap H in an axial direction on the bottle neck I the hooks 14 of the spreading ring 8 are approached or 55 moved apart according to the direction of movement of the cap, whereby the spreading ring 8 either closed and pressed against the inclined surfaces of the projection 2 or removed from this.

For opening and closing the spreading ring 8 there may also be provided a separate key l5 as shown in Figs. 5 ,to 7. The spreading ring 8, located in a radial inwardly open guide I6 of the cover 3, is provided with hooked ends I8. These hooks l8 project through the elliptical opening I9 of the key and rest in notches 20 largement 2 so that the cover can 'be'removed.

The container (Fig. 8) to which the new closure is applied may be of any shape, for instance the container may have an elliptical cross-section. The wall may becylindrical or conical; it may be reduced at the upper end to form a neck and so on. The container and the cover may each consist of any suitable material such as sheet metal glass, porcelain, earthenware, synthetic resin products, and so on. a

With containers having elliptical cross-section the key is arranged at one end of the major axis. Any tubular body having an internal groove, a spreading ring and a key may be used-the device forming an easily operated coupling for tubes, pipes and so on. I a

In the form of construction according to Figs. '9

and lend pieces 25, 26 of the clamping ring 8,

bent at an angle, project into an opening of a rotatably mounted key'28. By rocking the key'28 in the direction of the arrow the ends 25, 26 are pressed togetherby the wedge surfaces 21 and thus the ring 8 is pressed against the bottle neck.

In Fig. 11 the container is shown as a sheet 'metal can 3|, having a cylindrical outlet '30. To

this the cover 3 is secured by meansfof a key 32 bent at an'angle. The key 32 in this case may be secured by a lead seal 33. The wedge action of thekey 32 on the spreading ring 8 may in this construction be of the type shown in Figs.9and10.

The guide for the spreadingring may be. of any suitable shape. It is important for the ring to have a free radial inward path and that in the direction of the bottle neck axis it lies with free play between rigid walls, tongues and so forth.

In Figs. 12 to 15 are shown by way of example a few guides. As shown in Fig. '12 a guide 35 for the spreading ring may be formed by bending or beading over the lower rim 36 of the'skirt of the cover 3. In this case the spreading ring forced radiallyinwards by wedge action may act against the-annular surface 31., I g As shown in Fig. 13 only a few tongues 38, instead of the entire ring, may be curled inwardly and upwardly. The spreading ring located in the groove 35 thus lies on a number of pressure surfaces 39 of the lugs 38. For guiding the spreading ring tongues 4| may be stamped and project radially inward from the skirt 40 of the cover 3 as shown in Fig. 14. Further the lower rim of the skirt of the cover 3 'is offset inwardlyso that between the lower edges of the tongues 4| and the shoulder 42 there is formed a guide for the spreading ring 8,

Fig. 15 shows .a further form of construction.

.The cross section of the wire from which the spreading ring is formed may be square, rectangular or of any. other shape.

To form a guide for the spreading ring ribs, recesses or merely points may be pressed into the cylindrical skirt of the cover when made of sheet metal, to form an abutment for the ring.

The closure-may be constructed with a springy ring of which the configuration may be altered by suitable means to attach or detach the cover from the container. V

What I wish to claim is: I

l. A removable closure for bottles and other containers such as cans and so forth having an opening provided with a rim and a radially outwardly extending projection, said closure including a cover adapted to close said opening, an inwardly open guide on said cover, a split spring ring located in said guide and normally tending to open out so as to disengage itself from under said projection, and means associated with said ring and when moved relatively to the cover in one direction serving to close the ring around said opening under said projection and when moved in another direction serving to allow said ring to open out away from said projection.

2.. A removable cover according to claim 1, wherein said guide comprises aplurality of spaced radial members bent inwardly.

3. A removable cover according to claim 1,

wherein said guide consists of a plurality of to said cover, and ribs on said capengaging said ring between said spaced'members.

4. A removable cover according to claim 1, wherein said means comprise a member movable relatively to said cover, and wedge elements on said member and adapted to co-operate with said ring to cause it to contract around said rim and to allow it to expand away from said rim in response to the movement of the member on which they are carried.

5. A removable cover adapted to close an opening, and including a skirt having a radial opening therein, an inwardly open guide at the lower end of said skirt, an open spring ring in said guide and having hooked ends projecting outwardly through said opening, an operating member pivotally mounted on said hooked ends, and having a pair of converging camfaces engaged by said hooked ends, the arrangement being such that when said member is swung in one direction the ring is contracted, whilst when said member said ring 'tion and said tongues forming said guide.

7. A removable cover for containers having a rim encircling an opening and presenting .a

projection having an inclined surface below the end of said rim, said cover comprising in combination a disc adapted to fit on said rim so as to close said opening, a packing member between said disc and said rim, a skirt on said cover, said skirt extending to below said rim, said skirt having an annular inwardly open recess at or near the lower end thereof, an expanding split ring in said recess, and operating means associated with said ring and adapted, according to their movement to contract said ring against the inclined surface so as to draw said cover and said packing disc against said rim and to allow said 5 

